All files ReactCodeInput.js

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80.28% Branches 57/71
100% Functions 16/16
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import React, { Component } from 'react';
import PropTypes            from 'prop-types';
import classNames           from 'classnames';
import { uuidv4 }           from './utils';
 
const BACKSPACE_KEY = 8;
const LEFT_ARROW_KEY = 37;
const UP_ARROW_KEY = 38;
const RIGHT_ARROW_KEY = 39;
const DOWN_ARROW_KEY = 40;
 
class ReactCodeInput extends Component {
  constructor(props) {
    super(props);
 
    const { value, fields, type, isValid, disabled, filterKeyCodes } = props;
 
    this.state = {
      value,
      fields,
      type,
      input:             [],
      isValid,
      disabled,
      filterKeyCodes,
      defaultInputStyle: {
        fontFamily:    'monospace',
        MozAppearance: 'textfield',
        borderRadius:  '6px',
        border:        '1px solid',
        boxShadow:     '0px 0px 10px 0px rgba(0,0,0,.10)',
        margin:        '4px',
        paddingLeft:   '8px',
        width:         '36px',
        height:        '42px',
        fontSize:      '32px',
        boxSizing:     'border-box',
      },
    };
 
    for (let i = 0; i < Number(this.state.fields); i += 1) {
      if (i < 32) {
        const value = this.state.value[i] || '';
        this.state.input.push(value);
      }
    }
 
    this.textInput = [];
 
    this.uuid = uuidv4();
  }
 
  componentWillReceiveProps(nextProps) {
    this.setState({
                    isValid:  nextProps.isValid,
                    value:    nextProps.value,
                    disabled: nextProps.disabled,
                  });
  }
 
  handleBlur(e) {
    this.handleTouch(e.target.value);
  }
 
  handleTouch(value) {
    const { touch, untouch, name } = this.props;
 
    Iif (typeof touch === 'function' && typeof untouch === 'function') {
      if (value === '') {
        touch(name);
      } else {
        untouch(name);
      }
    }
  }
 
  handleChange(e) {
    let value = String(e.target.value);
 
    if (this.state.type === 'number') {
      value = value.replace(/[^\d]/g, '');
    }
 
    let fullValue = value;
 
    if (value !== '') {
      const input = this.state.input.slice();
 
      if (value.length > 1) {
        value.split('').map((chart, i) => {
          Eif (Number(e.target.dataset.id) + i < this.props.fields) {
            input[Number(e.target.dataset.id) + i] = chart;
          }
          return false;
        });
      } else {
        input[Number(e.target.dataset.id)] = value;
      }
 
      input.map((s, i) => {
        Eif (this.textInput[i]) {
          this.textInput[i].value = s;
        }
        return false;
      });
 
      const newTarget = this.textInput[e.target.dataset.id < input.length
                                       ? Number(e.target.dataset.id) + 1
                                       : e.target.dataset.id];
 
      Eif (newTarget) {
        newTarget.focus();
        newTarget.select();
      }
 
      fullValue = input.join('');
 
      this.setState({ value: input.join(''), input });
    }
 
    if (this.props.onChange && fullValue) {
      this.props.onChange(fullValue);
    }
 
    this.handleTouch(fullValue);
  }
 
  handleKeyDown(e) {
    const target = Number(e.target.dataset.id),
      nextTarget = this.textInput[target + 1],
      prevTarget = this.textInput[target - 1];
 
    let input, value;
 
    Eif (this.state.filterKeyCodes.length > 0) {
      this.state.filterKeyCodes.map((item) => {
        if (item === e.keyCode) {
          e.preventDefault();
          return true;
        }
      });
    }
 
    switch (e.keyCode) {
      case BACKSPACE_KEY:
        e.preventDefault();
        this.textInput[target].value = '';
        input = this.state.input.slice();
        input[target] = '';
        value = input.join('');
 
        this.setState({ value, input });
        Eif (this.textInput[target].value === '') {
          Iif (prevTarget) {
            prevTarget.focus();
            prevTarget.select();
          }
        }
        break;
 
      case LEFT_ARROW_KEY:
        e.preventDefault();
        Eif (prevTarget) {
          prevTarget.focus();
          prevTarget.select();
        }
        break;
 
      case RIGHT_ARROW_KEY:
        e.preventDefault();
        Eif (nextTarget) {
          nextTarget.focus();
          nextTarget.select();
        }
        break;
 
      case UP_ARROW_KEY:
        e.preventDefault();
        break;
 
      case DOWN_ARROW_KEY:
        e.preventDefault();
        break;
 
      default:
        break;
    }
 
    if (this.props.onChange && value) {
      this.props.onChange(value);
    }
 
    this.handleTouch(value);
  }
 
  render() {
    const { className, style = {}, inputStyle = {}, inputStyleInvalid = {}, type, autoFocus } = this.props,
      { disabled, input, isValid, defaultInputStyle } = this.state,
      styles = {
        container: style,
        input:     isValid ? inputStyle : inputStyleInvalid,
      };
 
    Object.assign(styles.container, {
      display: 'inline-block',
    });
 
    if (!className && Object.keys(inputStyle).length === 0) {
      Object.assign(inputStyle, {
        ...defaultInputStyle,
        color:           'black',
        backgroundColor: 'white',
        borderColor:     'lightgrey',
      });
    }
 
    if (!className && Object.keys(inputStyleInvalid).length === 0) {
      Object.assign(inputStyleInvalid, {
        ...defaultInputStyle,
        color:           '#b94a48',
        backgroundColor: '#f2dede',
        borderColor:     '#eed3d7',
      });
    }
 
    if (disabled) {
      Object.assign(styles.input, {
        cursor:          'not-allowed',
        color:           'lightgrey',
        borderColor:     'lightgrey',
        backgroundColor: '#efeff1',
      });
    }
 
    return (
      <div className={classNames(className, 'react-code-input')} style={styles.container}>
        {input.map((value, i) => {
          return (
            <input
              ref={(ref) => {
                this.textInput[i] = ref;
              }}
              id={`${this.uuid}-${i}`}
              data-id={i}
              autoFocus={autoFocus && (i === 0) ? 'autoFocus' : ''}
              defaultValue={value}
              key={`input_${i}`}
              type={type}
              min={0}
              max={9}
              maxLength={input.length === i + 1 ? 1 : input.length}
              style={styles.input}
              autoComplete="off"
              onFocus={(e) => e.target.select(e)}
              onBlur={(e) => this.handleBlur(e)}
              onChange={(e) => this.handleChange(e)}
              onKeyDown={(e) => this.handleKeyDown(e)}
              disabled={disabled}
              data-valid={isValid}
            />
          );
        })}
      </div>
    );
  }
}
 
ReactCodeInput.defaultProps = {
  autoFocus:      true,
  isValid:        true,
  disabled:       false,
  fields:         4,
  value:          '',
  type:           'text',
  filterKeyCodes: [189, 190],
};
 
ReactCodeInput.propTypes = {
  options:           PropTypes.object,
  type:              PropTypes.oneOf(['text', 'number', 'password', 'tel']),
  fields:            PropTypes.number,
  value:             PropTypes.string,
  onChange:          PropTypes.func,
  name:              PropTypes.string,
  touch:             PropTypes.func,
  untouch:           PropTypes.func,
  className:         PropTypes.string,
  isValid:           PropTypes.bool,
  disabled:          PropTypes.bool,
  style:             PropTypes.object,
  inputStyle:        PropTypes.object,
  inputStyleInvalid: PropTypes.object,
  autoFocus:         PropTypes.bool,
  filterKeyCodes:    PropTypes.array,
};
 
export default ReactCodeInput;